{"id":"GO-2026-6372","revision":null,"records":[{"revision":"bf3bb108b37e431082083716c76a2bc3","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-79921","aliases":[],"title":"amqp091-go has a Potential Memory Exhaustion/Protocol Violation via Broker-Controlled Oversized Payload","description":"amqp091-go is a Go AMQP 0.9.1 client. Before version 1.13.0, a compromised or malicious AMQP broker can force the client to allocate resources for and process content body frames that exceed the negotiated frame_max limit. This can lead to unexpected memory consumption or application-layer denial of service (DoS), bypassing the protocol's built-in framing constraints. Version 1.13.0 contains a fix. 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Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-79921","identifiers":["CVE-2026-79921"]},"retained":false,"historicalAffected":[]},{"revision":"89c11fbabc1a4b239568f73dac9a8d3b","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-6c5v-hqjr-5xxp","aliases":["CVE-2026-79921","GO-2026-6372"],"title":"amqp091-go has a Potential Memory Exhaustion/Protocol Violation via Broker-Controlled Oversized Payload","description":"**Summary**\nA vulnerability exists in the amqp091-go client library where a compromised or malicious AMQP broker can force the client to allocate resources for and process content body frames that exceed the negotiated frame_max limit. This can lead to unexpected memory consumption or application-layer denial of service (DoS), bypassing the protocol's built-in framing constraints.\n\n**Details**\nDuring a standard AMQP 0-9-1 connection handshake, the client and the broker negotiate a maximum frame size (frame_max), for example, 4096 bytes.\n\nHowever, after negotiation, a malicious broker can send a valid basic.deliver sequence containing a content body frame whose header declares a payload size larger than the negotiated frame_max. Instead of enforcing the agreed-upon limit and closing the connection with a frame-error (as mandated by the AMQP 0-9-1 specification), the amqp091-go client:\n\n1. Accepts the broker-declared oversized frame size.\n2. Allocates memory based on this oversized declaration.\n3. Reads the payload, assembles it into the message, and delivers it to the consumer.\n\n**Impact**\n\n- Denial of Service (DoS): If a broker sends extremely large frame sizes, it can trigger significant memory allocations on the client side, potentially leading to Out-Of-Memory (OOM) crashes.\n- Protocol Violation: The client fails to enforce negotiated connection parameters, trusting the broker implicitly even after constraints have been established.","state":0,"publishedAt":"2026-09-03T20:15:13+00:00","modifiedAt":"2026-09-15T19:10:48.5771971+00:00","affected":[{"ecosystem":"Go","name":"github.com/rabbitmq/amqp091-go","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.13.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-6c5v-hqjr-5xxp","https://nvd.nist.gov/vuln/detail/CVE-2026-79921","https://github.com/rabbitmq/amqp091-go/pull/353","https://github.com/rabbitmq/amqp091-go/commit/6beb7b51f59e46ddcf8066ad498dad32491d3be0","https://github.com/rabbitmq/amqp091-go","https://github.com/rabbitmq/amqp091-go/releases/tag/v1.13.0"],"sourceUrl":"https://github.com/advisories/GHSA-6c5v-hqjr-5xxp","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-6c5v-hqjr-5xxp","identifiers":["GHSA-6c5v-hqjr-5xxp","CVE-2026-79921","GO-2026-6372"]},"retained":false,"historicalAffected":[]},{"revision":"2fb135bb294b4fb1b01ccdd2c921c160","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-6372","aliases":["CVE-2026-79921","GHSA-6c5v-hqjr-5xxp"],"title":"Potential Memory Exhaustion/Protocol Violation via Broker-Controlled Oversized Payload in github.com/rabbitmq/amqp091-go","description":"Potential Memory Exhaustion/Protocol Violation via Broker-Controlled Oversized Payload in github.com/rabbitmq/amqp091-go","state":0,"publishedAt":"2026-09-15T18:39:25+00:00","modifiedAt":"2026-09-15T19:00:17.0151357+00:00","affected":[{"ecosystem":"Go","name":"github.com/rabbitmq/amqp091-go","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.13.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-6c5v-hqjr-5xxp","https://github.com/rabbitmq/amqp091-go/commit/6beb7b51f59e46ddcf8066ad498dad32491d3be0","https://github.com/rabbitmq/amqp091-go/pull/353","https://github.com/rabbitmq/amqp091-go/releases/tag/v1.13.0"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-6372","license":"OSV · upstream source license applies","key":"osv:GO-2026-6372","identifiers":["GO-2026-6372","CVE-2026-79921","GHSA-6c5v-hqjr-5xxp"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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